Heat-exchanger apparatus



Feb. 24, 1931. s. T. JACOCKS HEAT EXCHANGER APPARATUS IN V EN TOR.

e TJacoc/rs 2 Sheets-Sheet l TTORNEYS.

Filed July 6, 1929 Feb. 24, 1931.

G. T. JACOCKS 1,794,336 HEAT EXCHANGER APPARATUS Filed July 6, 1929 2 Sheets-Sheet 2 INVENTOR.

Geo/- e TJacocks BY I I c ATTORNEYS.

Patented Feb. 24, 1931 UNITED STATES PATENT OFFICE GEORGE '1. JACQCKS, OF LABCHJIONT, NEW YORK. ASSIGNOR, BY MESNE ASSIGNMENTS, T0 ALDO PRODUCTS INCORPORATED, 015 NEW YORK. N. Y.. A CORPORATION OF DELAWARE HEAT-CHANGER APPARATUS Application filed July 6, 1929. Serial R0. 876,296.

This invention relates generally to apparatus for the exchange of heat betwen two fluid media of different temperatures, such as condensers and the like, and particularly to that I type of apparatus wherein one of said media is circulated through tubes mounted in a chamber to which the other of said m'edia. usually in the vapor phase, is admitted to be cooled or heated as the case may be.

The object of the invention is to provide a simple and inexpensive means of directing the flow of fluid over the outer surfaces of the tubes of the apparatus so that the direction of said flow will be transverse as well as 15 parallel to said tubes.

The invention claimed is hereinafterfully set forth.

In the accompanying drawings: Figure 1 is a vertical section of a heat exchanger em- 20 bodying the invention; Fig. 2. an end view.

partially in section. on the line IIII of Fig. 1; Fig. 3, a fragmentary perspective view of the inner shell; Fig. 4, a fragmentary perspective view of the circulation tubes and the battle plates through which they pass; and, Fig. 5, a perspective view of one of the retaining rings which clamp the battles to the shell.

In the practice of the invention, referring descriptively to the specific embodiment thereof selected for exemplification herein, the heat exchanger comprises a casing 1, having flanges 2, 3. at either end thereof. for connection to the detachable heads 4 and 5. Interposed between the head -l and the flange 2, is a tube plate 6, in which the tubes 7 and 8. are secured by any appropriate means, the opposite ends of said tubes being secured in the tube plate 9 of the hollow floating header. Bolted to the tube plate 9 is a dished plate 9a, the space between the tube plate. and the dished plate forming a chamber or head r 96. Itis within the contemplation of the invention to form integrally the tube plate and the dished plate. An outlet 10, is provided on the casing adjacent one end thereof. and receives the duct 11. An expansible or collapsible shell 12, adapted to surround the tubes 7 and 8, is mounted in the casing 1, concentric thereof. This shell. is formed of relatively light material, rolled into cylindrical or other desired form, provided with spaced, peripheral grooves 13, which assist in securing the baflle plates in position. One of the grooves 13 is disposed near one end of the shell and is adapted to engage a flange on the plate 6, to secure the shell thereto. An opening 12a. is provided at the bottom of the shell for the escape of any liquid which may be condensed therein.

Itis to be noted that the tubes 7 and 8, a re rigidly secured to the casing 1, at one end, and that the header 9?), at their opposite ends is free to move to accommodate the expanding and contracting which occurs in the tubes, thus eliminating the possibility of undesirable strains.

Mounted on the shell 12-, and surrounding an aperture therein is the flange 15, positioned and adapted to have aflixed to it by any suitable means the duct 11. Mounted on the tubes 7, 8, which pass through the shell. are the baffies 16. adapted to seat. at their peripheries in the grooves 13. and formed in them are apertures 17. other than those for the tubes, through which fluid may flow from one compartment. formed by the walls of said bafiles an" the shell 12. to another compartment, and, finally to the space comprised between the walls of the casing 1. and the shell 12. Retainers 18, are formed with grooves 19. adapting them to coact with the peripheral ridge backing the grooves 13, and are provided with ears 20, bored for the reception of a bolt 21.

The head 1, has formed on it a partition or partitions 22, adapted to cooperate with the tube sheet 6. to form compartments in the hollow space of said head 1. One of said compartments 23. serves to supply fluid received through the'inlet 25. to the tubes 7, through which said fluid flows to the hollow floating header 9?) and from thence through the tubes 8. to the compartment 21. from which said fluid flows through the outlet 26.

The apparatus is assembled by passing the tubes 7, 8. through apertures in the battles 16. in predetermined spaced relation, and in positely disposed in adjacent bafiles, as shown in Fig. 4. The tubes may now be mounted in the tube plate 6, the hollow floating header 9?), bein disposed above the collapsible shell 12 whlch is shown separately in Fig. '3. The shell 12, is so disposed that the end groove 13 seats upon the recurvant flange 14, and the other grooves 13, seat upon their respective baflles 16. The retainers 18 may now be positioned over the res ective grooves 13, and contracted by the b0 ts 21, thus firmly securing the expansible shell 12 to the flange 14 and the baffles 16. The flange 15, is so positioned on the shell 12, that after the assembled tube nest is positioned in the casing 1, the duct 11, may be passed through the flanged outlet 10, and secured to said flange 15. y

The action of the exchangers when used, for example, as a condenser is as follows: Cooling fluid is admitted by the inlet 25 and compartment 23 to the tubes 7, through which it flows to the hollow floating header 9b, and thence through the tubes 8, and the compartment 21 to the outlet 26. The vapor to be condensed is admitted by the duct 27 to the duct 11, through which it flows to the space comprised by the walls of the shell 12, the tube plate 6, and the first baflle 16. Through the orifice 17 in the first baflie, denoted by the letter A in Fig. 1, the fluid then flows to the next similar compartment from which it escapes through the oppositely disposed orifice 17 in the next baflle, denoted by the letter B and so on until the last baflie is passed, when the fluid escapes to the space comprised between the walls of the casing l and the shell 12, from which space the cooled fluid or condensate, may be, withdrawn through the opening 28, which may be of any predetermined size depending upon the nature of the fluid and the method employed.

While one of the preferred forms of construction has been described and shown, it is obvious that many variations in procedure, form, arrangement, and construction of parts, may be resorted to, and the invention, therefore, is not limited to the particular embodiment disclosed, but includes such changes and modifications as come within the spirit and scope of the invention as set forth in the appended claims. Furthermore, while one form of inlet duct 11, has been shown, it will be fully'appreciated that many variations may be made within the scope of the invention, a preferred embodiment being a design that is readily attachable to and de tachable from the collapsible shell 12. The inlet pipe 11, being preferably spaced from the connection 10, to permit workable clearance in assembling the parts.

The invention claimed and desired to be secured by Letters Patent, is:

1. In a heat exchanger, the combination of a main chamber, a smaller chamber disposed within the main chamber, a shell formin%the side walls of the smaller chamber, ba e plates disposed transversely of the smaller chamber, and dividing it into compartments, an inlet header sealed from communication with the chambers, a group of tubes passing through the baflle plates and communicating with the inlet header, an outlet header sealed from communication with the chambers, a second group of tubes passing through the baflle plates and communicating with the outlet header, a common header communicating with both groups of tubes, and an aperture in each baflle late permitting fluid to pass externally o the tubes from one compartment to another.

2. In a heat exchanger, the combination of, a main chamber, a smaller chamber disposed within the main chamber, a shell forming the side walls of the smaller chamber, baflle plates disposed transversely of the smaller chamber, and dividing it into compartments, an inlet header sealed from communication with the chambers, a group of tubes passing through the baflle plates and communicating with the inlet header, an outlet header sealed from communication with the chambers, a second group of tubes passing through the baflie plates and communicating with the outlet header, a common header communicating with both groups of tubes, and an aperture in each baffle plate permitting fluid to pass externally of the tubes from one compartment to another, the apertures being relatively staggered.

- 3. In a heat exchanger, the combination of, a main chamber, a smaller chamber disposed within the main chamber, a shell forming the side walls of the smaller chamber, baflle plates disposed entirely across the smaller chamber, and dividing it into compartments, an inlet header sealed from communication with the chambers, a group of tubes passing through the baflle plates and communicating with the inlet header, an outlet header sealed from communication with the chambers, a second group of tubes passing through the bafllc plates and communicating with the outlet header, a common header ..communicating with both groups of tubes, and an aperture in each baflie plate adapted to permit fluid to pass externally of the tubes from one com partment to another, the apertures in the successive plates being'disposed at different sides thereof.

4. In a heat exchanger, the combination of an outer casing, a plurality of tubes therein, a collapsible shell, within the outer casing, a plurality of spaced baflles receiving the tubes; permanently formed grooves in the shell for positioning the battles, and means for clamping the collapsible shell and the 'baflles together.

5. In a heat exchanger, the combination of an outer casing, a plurality of tubes therein, a tube plate, a plurality of spaced baflles disposed transversel of and receiving the tubes, a recurvant ange on the tube .plate, an expansible shell, having peripheral grooves, adapted to receive the periphery of the baflies, and a bottom peripheral groove adapted to receive the recurvant flange, and means for contracting the expansible shell into gripping relation with said flange and 6. In a heat exchanger, the combination of anouter casing, an inner shell, a plurality of parallel tubes, a duct for admitting fluid to the inner shell, spaced baflies mounted on the tubes, apertures in the bafiles for the passage of fluid externally of the tubes, grooves permanently formed in the inner shell positionin clamping ring disposed at the rear of each of the grooves for gripping the shell to the bafiles.

7. In a heat exchanger, the. combination of an outer casing, a two-compartment header at one end of the casing, a tube plate interposed between said header and the casing, a

- floating hollow header within the casing, and

a plurality of tubes fitted in the tube plate and the hollow floating header, an expansible open ended inner shell encompassing the tubes, a plurality of baflles through which the tubes pass, apertures in the baflies for the passage of fluid externally of the tubes, alternately, oppositely disposed in the baflles, a recurvant flange on the tube plate, a peripheral indentation in the expansible shell, adapted to cooperate with the recurvant flange on the tube plate to hold the shell in place, peripheral indentations in the shell adapted to look the baffles in position, means for clamping the shell to said recurvant flange and to said baflles, and means for admitting fluid to the space between the shell and the tubes.

8. In a heat exchanger, the combination of a casing, a tube plate, a floating header, tubes between the tube plate and the header, an open ended collapsible cylindrical shell surrounding the tubes, spaced from the casing formed on its inner surface with aplurality of permanent circumferential grooves, a circular baffie plate fitted in each of the grooves, a clamping means disposed to the rear of each of the grooves for contracting the shell to cause the bottom wall of the groove to snugly engage the periphery of the bafile plate therein, and means, mounted on the casing for conveying fluid through the said open ended shell to the space surrounding the tubes.

GEORGE T. J ACOCKS.

and locking the baflles, and a split 

